钢筋机械连接接头，应以500个为一个验收批进行验收。
参考答案：错
—How about going hiking this weekend?
—Sorry. I would rather _______ than _______.[ ]
A. to stay at home; to go out
B. stay at home; to go out
C. stay at home; go out
D. staying at home; going out
水套加热炉
